PURPOSE: To manufacture an organic electrolyte secondary battery of high battery voltage, favorable voltage flatness at the time of discharge, and large battery capacity in simple manufacturing processes.

CONSTITUTION: Organic solvent in which lithium salt is dissolved is used as electrolyte, and transition metal comprising chalcogen compound is used as a positive electrode material 3. In a condition where an organic baked body 6 and metal lithium 7 are electrically in contact with each other in a battery, the metal lithium 7 is included in the organic baked body 6 by self-discharge reaction. A negative electrode material comprising the organic baked body 6 including lithium can thus be provided.